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(Model No. 291,708. Patented Jan. 8, 1884.

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LOUISA FOSS, OF EAST BOSTON, MASSACHUSETTS, ADMINISTRAIEIX OF GEORGE FOXFOSS, DECEASED.

TAKE-UP MECHANISM FOR SEWING-=MACHlNE SPECIFICATION forming part ofLetters Patent No. 291,708, dated January 8, 1884.

Application filed July 25, 1853.

T0 60% whom, it may concern.-

Be it known that GEORGE Fox Foss, deceased, formerly residing at EastBoston, in the county of Suffolk and State of Massachusetts, did inventcertain new and useful Improvements in Take-U p Mechanism; and I, LOUISAFOss, as administratrix of said GEORGE FOX Foss, do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as willenablc others skilled in the art to which it appertains tomake and use the same, reference being had to the accompany ingdrawings, and to letters or figures of reference marked thereon, whichform a part of this specification.

This invention relates to thread-tension devices of single-wax-threadsewing-machines; and it consists in a vertical arm suspended at top fromand adapted to vibrate upon a stud projecting outward from a bracketsecured to the side of the gooseneck of the machine, the lower end ofsaid vibratory arm carrying a thread guide or eye,whieh is securedadjustably to it, while the arm itself is crowded away from the head ofthe machine by a spring, the tension of which is resisted by the thread.Provision is made for governing the length of vibration of the arm, inaccordance with the length of the stitch taken, by the thread, andprovision is also made in a simple manner for varying the stress andpower of the tensionspring, the first of which consists in a screwscrewing through the extreme upper part of the vibratory arm above itspivot, and abutting against the machine-head, while the latter consistsin a series of notches in the arm at variable distances from its pivot,and adapted to receive the head of the sprin In the accompanyingdrawings, Figure 1 represents a front view of the improved takeupmechanism; Fig. 2, a side view thereof; Fig. 3, a front view of thesame, a part of the goose-neck and head to which is is attached, and apart of the work-table.

I11 said drawings, A represents a portion of the goose-neck of asingle-wax-thrcad sewingmachine, and B the head of such goose-neck,while 0 is the work-table thereof.

(Model) In carrying out the invention a bracket, D, is employed, whichis secured at its lower end adjustably to the head, and to the upperpart of this bracket is pivoted, at its upper end, as shown at a, apendent arm or guide carrier, E, adapted to vibrate upon suchpivotlaterally of the head 13. To the lower part of the arm E is securedthe thread-guide which is shown at F, a set-screw, b, or other meansbeing employed for securing it in place.

G in the drawings represents a curved wire sprin the upper end of whichis bent at right angles, and enters a notch, c, in one side of anopening, (Z, in the arm E, while the lower end of such spring is securedin a suitable manner to the lower part of the bracket D. The spring Gcrowds the arm E in a direction away from the head B, and the tension ofthe thread passing through the eye of the guide F is exerted to overcomethe stress of the spring; hence the arm is always in readiness to takeup the slack of the thread. The upper end of the arm E, above the pivota of the latter, is formed with a right-angular head, 0, through which,from front to rear, is inserted a screw, f, the in nor cndof which bearsagainst the upper part of the bracket D. By means of the screw f thelengthof vibration of the arm E and thread-guide F may be varied toaccommodate changes in the length of the stitch laid by the machine.

In order to be able to adjust or vary the stress of the spring G shouldoccasion require,

a series of the notches c are formed in the arm E, arranged in avertical row, as shown in the drawings. By changing the head of thespring from one to the other ofthese notches, (which may be accomplishedeasily and expeditiously,) the leverage which the arm E and threadguideF exert upon the thread is varied-that is to say, the tension of thetake-up is thus rendered readily adjustable, the notches being atdifferent distances from the pivotal point of said arm.

IVhat is claimed is 1. A bar, E, in combination with a rod, E, which isvertically adjust-able therein, and provided with an eye for the wire, abracket,

to which said bar is pivoted, and a spring, operative part shifted fromone of them to any 10 which bears against'said bar to cause it to other,for the purpose of lessening or increasapply tension to the thread,substantially as ing the tension, substantially as set forth. set forth.

. LOUISA FOSS 2. A Noted tension-arm )rovlded with a r, w Seriesolgnotohes at differeritl distances from Ad nmmiiah we 0] (100. .10901088, deceased. the pivotal point of said arm, in combination\Vitnesses: with a spring which engages with any one of CHARLES S. Foss,said notches, and which may have its end or l 11 CURTIS.

